Pressure Control Solenoid "G" Control Circuit Low
Code P2814 indicates the transmission control solenoid G circuit is detecting a low voltage or resistance condition, preventing proper transmission pressure control. This causes the transmission to enter limp mode and shift erratically as the PCM limits power to protect the transmission from damage.
What You Might Notice
- Check Engine Light illuminated
- Transmission shifts hard or bangs into gear
- Transmission slips during acceleration or shifting
- Increased fuel consumption
- Transmission overheating
Most Common Causes
- 1
Faulty Pressure Control Solenoid G
The solenoid itself may have failed electrically, causing low resistance in the circuit. This is the most common cause requiring solenoid replacement.
- 2
Damaged wiring or connectors
Corroded, broken, or loose wiring to the solenoid or damaged connector pins prevent proper voltage from reaching the solenoid coil.
- 3
Low transmission fluid
Insufficient fluid level can cause electrical sensor faults and solenoid activation issues, triggering this code.
- 4
Transmission control module (TCM) failure
A faulty TCM may incorrectly signal a low voltage condition or fail to properly control the solenoid circuit.
How to Diagnose It
- 1
Check Faulty Pressure Control Solenoid G — The solenoid itself may have failed electrically, causing low resistance in the circuit. This is the most common cause requiring solenoid replacement.
- 2
Check Damaged wiring or connectors — Corroded, broken, or loose wiring to the solenoid or damaged connector pins prevent proper voltage from reaching the solenoid coil.
- 3
Check Low transmission fluid — Insufficient fluid level can cause electrical sensor faults and solenoid activation issues, triggering this code.
- 4
Check Transmission control module (TCM) failure — A faulty TCM may incorrectly signal a low voltage condition or fail to properly control the solenoid circuit.
How to Fix It
- 1
Replace Pressure Control Solenoid G
Remove and replace the faulty solenoid with a new OEM or quality aftermarket unit. This resolves most P2814 codes caused by solenoid failure.
- 2
Inspect and repair wiring and connectors
Check all wiring and connectors to the solenoid for corrosion, damage, or loose connections. Clean, repair, or replace as needed to restore proper voltage delivery.
- 3
Check and top off transmission fluid
Verify transmission fluid level is at proper operating range using the dipstick or electronic level check. Add approved transmission fluid if low to restore proper system operation.
- 4
Test and replace transmission control module if needed
Use a diagnostic scanner to confirm TCM function and voltage output to solenoid circuit. Replace TCM if it is not sending proper control signals.
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